package com.sky.service.impl;

import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.vo.TurnoverReportVO;
import com.sky.vo.UserReportVO;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
@Slf4j
public class ReportServiceImpl implements ReportService {
	@Autowired
	private OrderMapper orderMapper;
	@Autowired
	private UserMapper userMapper;
	/**
	 * 统计指定时间区间内的营业额数据
	 * @param begin
	 * @param end
	 * @return
	 */
	@Override
	public TurnoverReportVO turnoverStatistics(LocalDate begin, LocalDate end) {
		//当前集合用于存放从begin到end的每天日期
		List<LocalDate> dateList = new ArrayList<>();
		dateList.add(begin);
		while (!begin.equals(end)){
			// 日期计算，begin加1天
			begin = begin.plusDays(1);
			dateList.add(begin);
		}
		List<Double> turnoverList = new ArrayList<>();
		for (LocalDate date : dateList){
			//查询date日期对应的营业数据，营业额是指：订单状态为5（完成）的订单金额
			LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
			LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
			Map map = new HashMap();
			map.put("begin",beginTime);
			map.put("end",endTime);
			map.put("status", Orders.COMPLETED);
			Double turnover =orderMapper.sumByMap(map);
			turnoverList.add(turnover);
		}
		return TurnoverReportVO
				.builder()
				.dateList(StringUtils.join(dateList, ","))
				.turnoverList(StringUtils.join(turnoverList, ","))
				.build();
	}
	/**
	 * 用户统计
	 * @param begin
	 * @param end
	 * @return
	 */
	@Override
	public UserReportVO userStatistics(LocalDate begin, LocalDate end) {
		//存放从begin到end的每天日期
		List<LocalDate> dateList = new ArrayList<>();
		dateList.add(begin);
		while (!begin.equals(end)){
			begin = begin.plusDays(1);
			dateList.add(begin);
		}
		//存放每天新增用户数
		List<Integer> newUserList = new ArrayList<>();
		//存放每天总用户数
		List<Integer> totalUserList = new ArrayList<>();
		for (LocalDate date : dateList){
			LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
			LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
			Map map=new HashMap();
			map.put("end",endTime);
			//总用户数量
			Integer totalUser = userMapper.countByMap(map);
			map.put("begin",beginTime);
			//新增用户数量
			 Integer newUser = userMapper.countByMap(map);
			 
			 totalUserList.add(totalUser);
			 newUserList.add(newUser);
		}
		//封装返回结果
		return UserReportVO
				.builder()
				.dateList(StringUtils.join(dateList, ","))
				.totalUserList(StringUtils.join(totalUserList, ","))
				.newUserList(StringUtils.join(newUserList, ","))
				.build();
	}
}
